Every Marvin Window and Door is made to order, one at a time. An unparalleled value in the market, Marvin offers craftsman-quality construction, energy-efficient technology and the industry’s most extensive selection of shapes, styles, sizes and options.

Integrity's windows and doors are made with Ultrex® Fiberglass, an innovative material created 20 years ago. For two decades now, Ultrex has outlasted and outperformed the competition on virtually every measurable scale.

Infinity Ultrex fiberglass replacement windows and patio doors are designed to replicate the look of traditional wood windows while providing modern features and low-maintenance, yet long-lasting performance.

When you partner with Marvin on your next project—whether that be a remodel, replacement, new construction, or even the creation of sustainable building—you can be sure you will be getting the guidance and expertise necessary to make any design complete. Tell us a few things about your project, and Marvin will work with local dealers to bring your ideas to life.

We gathered some helpful resources to help answer your immediate questions and provide solutions. From manuals to maintenance, and installation instructions to energy data, there’s a wealth of information right here.

Need Some Extra Help?

We gathered some helpful resources to help answer your immediate questions and provide solutions. From manuals to maintenance, and installation instructions to energy data, there’s a wealth of information right here.

IntegrityIMPACT Outswing French Door

The Integrity Wood-Ultrex IMPACT Outswing French Door is the perfect way to enjoy the elegance of a French door while living on the windswept coast. These doors deliver hurricane-level Impact Zone 3-rated performance and the unmatched strength of an Ultrex pultruded fiberglass exterior, all of which will help keep Mother Nature at bay. The multi-point locking system ensures watertight performance when the storm strikes.

Architectural Detail Manuals

Choose Wisely

When shopping for windows, it’s important to focus on the four main categories: materials, efficiency, design, and value. For additional help, watch our video series Decide with the Diamond, hosted by Lou Manfredini.